3v4l.org

run code in 300+ PHP versions simultaneously
<?php $some_string = "Ку ку"; $arra_c = array("UCS-4", "UCS-4BE", "UCS-4LE", "UCS-2", "UCS-2BE", "UCS-2LE", "UTF-32", "UTF-32BE", "UTF-32LE", "UTF-16", "UTF-16BE", "UTF-16LE", "UTF-7", "UTF7-IMAP", "UTF-8", "ASCII", "EUC-JP", "SJIS", "eucJP-win", "SJIS-win", "ISO-2022-JP", "ISO-2022-JP-MS", "CP932", "CP51932", "SJIS-mac", "SJIS-Mobile#DOCOMO", "SJIS-Mobile#KDDI", "SJIS-Mobile#SOFTBANK", "UTF-8-Mobile#DOCOMO", "UTF-8-Mobile#KDDI-A", "UTF-8-Mobile#KDDI-B", "UTF-8-Mobile#SOFTBANK", "ISO-2022-JP-MOBILE#KDDI", "JIS", "JIS-ms", "CP50220", "CP50220raw", "CP50221", "CP50222", "ISO-8859-1", "ISO-8859-2", "ISO-8859-3", "ISO-8859-4", "ISO-8859-5", "ISO-8859-6", "ISO-8859-7", "ISO-8859-8", "ISO-8859-9", "ISO-8859-10", "ISO-8859-13", "ISO-8859-14", "ISO-8859-15", "byte2be", "byte2le", "byte4be", "byte4le", "BASE64", "HTML-ENTITIES", "7bit", "8bit", "EUC-CN", "CP936", "GB18030", "HZ", "EUC-TW", "CP950", "BIG-5", "EUC-KR", "UHC",// (CP949) "ISO-2022-KR", "Windows-1251",// (CP1251) "Windows-1252",// (CP1252) "CP866",// (IBM866) "KOI8-R"); foreach($arra_c as $k => $v){ var_dump(mb_convert_encoding($some_string,$v,"UTF-8" ). "-" . $v ." # ". strlen(json_encode(array('message' => mb_convert_encoding($some_string,$v,"UTF-8" ))))); } //var_dump(mb_detect_encoding($some_string)); //var_dump(strlen(json_encode(array('message' => $some_string))));

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
8.3.60.0110.01118.81
8.3.50.0110.00521.33
8.3.40.0130.00319.27
8.3.30.0110.01120.50
8.3.20.0090.00620.50
8.3.10.0050.00322.29
8.3.00.0030.00622.33
8.2.180.0100.00717.13
8.2.170.0120.00322.96
8.2.160.0060.00920.75
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0100.01326.16
8.2.120.0030.00620.04
8.2.110.0000.00921.42
8.2.100.0070.00418.28
8.2.90.0000.00819.58
8.2.80.0080.00017.97
8.2.70.0000.00818.13
8.2.60.0030.00618.18
8.2.50.0030.00518.13
8.2.40.0050.00318.53
8.2.30.0040.00418.56
8.2.20.0000.00818.02
8.2.10.0000.00818.18
8.2.00.0090.00018.14
8.1.280.0120.00925.92
8.1.270.0050.00324.66
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00322.45
8.1.230.0090.00319.33
8.1.220.0040.00418.16
8.1.210.0030.00618.77
8.1.200.0040.00717.73
8.1.190.0070.00317.91
8.1.180.0040.00420.44
8.1.170.0000.00818.85
8.1.160.0040.00422.46
8.1.150.0080.00019.09
8.1.140.0040.00417.84
8.1.130.0040.00418.13
8.1.120.0060.00317.83
8.1.110.0050.00317.88
8.1.100.0040.00417.89
8.1.90.0040.00417.80
8.1.80.0040.00417.92
8.1.70.0040.00417.89
8.1.60.0030.00617.91
8.1.50.0030.00617.82
8.1.40.0080.00017.93
8.1.30.0040.00417.95
8.1.20.0050.00317.84
8.1.10.0030.00517.88
8.1.00.0000.00817.71
8.0.300.0000.00918.77
8.0.290.0060.00317.00
8.0.280.0040.00418.67
8.0.270.0000.00717.54
8.0.260.0000.00717.18
8.0.250.0050.00217.03
8.0.240.0000.00817.08
8.0.230.0050.00317.16
8.0.220.0000.00717.07
8.0.210.0040.00416.97
8.0.200.0060.00317.15
8.0.190.0040.00417.17
8.0.180.0040.00417.09
8.0.170.0030.00617.11
8.0.160.0050.00317.00
8.0.150.0000.00817.13
8.0.140.0040.00417.16
8.0.130.0000.00613.61
8.0.120.0050.00317.19
8.0.110.0000.00817.08
8.0.100.0060.00316.98
8.0.90.0000.00817.27
8.0.80.0030.01417.11
8.0.70.0030.00517.25
8.0.60.0000.00717.32
8.0.50.0000.00717.11
8.0.30.0160.00517.50
8.0.20.0030.01617.46
8.0.10.0030.00517.27
8.0.00.0110.01016.91
7.4.330.0050.00015.00
7.4.320.0030.00316.74
7.4.300.0030.00316.80
7.4.290.0070.00016.91
7.4.280.0000.00716.92
7.4.270.0050.00316.90
7.4.260.0000.00716.77
7.4.250.0040.00416.70
7.4.240.0060.00216.88
7.4.230.0030.00516.98
7.4.220.0090.00916.93
7.4.210.0050.01016.84
7.4.200.0040.00417.02
7.4.190.0000.00716.87
7.4.160.0100.01616.94
7.4.150.0160.00517.40
7.4.140.0130.00817.86
7.4.130.0130.00716.64
7.4.120.0080.01417.04
7.4.110.0100.00716.79
7.4.100.0100.00716.89
7.4.90.0100.01016.73
7.4.80.0130.01019.39
7.4.70.0130.00516.77
7.4.60.0030.01516.91
7.4.50.0030.00616.59
7.4.40.0160.00322.77
7.4.30.0150.00316.79
7.4.00.0020.01715.06
7.3.330.0030.00313.20
7.3.320.0000.00613.36
7.3.310.0000.00816.28
7.3.300.0000.00716.36
7.3.290.0180.01816.41
7.3.280.0120.00716.48
7.3.270.0150.00417.40
7.3.260.0160.01016.86
7.3.250.0150.00916.76
7.3.240.0120.01216.78
7.3.230.0120.00616.68
7.3.210.0090.01316.73
7.3.200.0070.01519.39
7.3.190.0110.00816.79
7.3.180.0070.01016.83
7.3.170.0060.01216.81
7.3.160.0000.01616.55
7.3.120.0080.00815.11
7.3.110.0060.01215.15
7.3.100.0000.01415.16
7.3.90.0100.00314.95
7.3.80.0090.00615.35
7.3.70.0080.00614.83
7.3.60.0040.01115.12
7.3.50.0060.01215.05
7.3.40.0040.00414.78
7.3.30.0060.00615.11
7.3.20.0060.00917.00
7.3.10.0110.00416.91
7.3.00.0080.01116.61
7.2.330.0060.01216.84
7.2.320.0060.01516.73
7.2.310.0160.01016.99
7.2.300.0110.00816.70
7.2.290.0070.01016.95
7.2.250.0030.01715.35
7.2.240.0070.01415.30
7.2.230.0070.00715.48
7.2.220.0030.01315.49
7.2.210.0120.00015.51
7.2.200.0100.00315.02
7.2.190.0070.00715.44
7.2.180.0040.01115.17
7.2.170.0030.00615.41
7.2.00.0040.01119.63
7.1.330.0090.00616.23
7.1.320.0000.01516.07
7.1.310.0040.01115.90
7.1.300.0000.01316.11
7.1.290.0000.01515.84
7.1.280.0040.00816.19
7.1.270.0110.00416.14
7.1.260.0070.01115.84
7.1.200.0030.00916.34
7.1.100.0040.01118.29
7.1.70.0030.00617.32
7.1.60.0150.01119.21
7.1.50.0070.01817.14
7.1.00.0030.04322.54
7.0.200.0330.00314.93
7.0.140.0000.08021.92
7.0.90.0300.05020.14
7.0.80.0100.04020.00
7.0.70.0530.04319.90
7.0.60.0330.07719.98
7.0.50.0270.03020.34
7.0.40.0030.03719.96
7.0.30.0070.09020.05
7.0.20.0100.08320.13
7.0.10.0100.08320.13
7.0.00.0070.06320.12
5.6.280.0000.07720.93
5.6.240.0100.07320.77
5.6.230.0070.07320.58
5.6.220.0130.07720.75
5.6.210.0030.05020.57
5.6.200.0130.03721.02
5.6.190.0070.03320.94
5.6.180.0130.07021.03
5.6.170.0030.05021.06
5.6.160.0100.07721.04
5.6.150.0170.07721.12
5.6.140.0000.05021.03
5.6.130.0030.07321.11
5.6.120.0030.07321.05
5.6.110.0130.07721.06
5.6.100.0200.07720.95
5.6.90.0100.06721.04
5.6.80.0130.06720.52
5.6.70.0130.06320.43
5.6.60.0070.04320.46
5.6.50.0070.08020.42
5.6.40.0030.07020.36
5.6.30.0030.08320.45
5.6.20.0130.05720.40
5.6.10.0170.07020.28
5.6.00.0130.06720.52
5.5.380.0070.08320.51
5.5.370.0030.07020.46
5.5.360.0130.07320.38
5.5.350.0130.06720.45
5.5.340.0100.05320.91
5.5.330.0030.03320.95
5.5.320.0030.07720.89
5.5.310.0130.07020.81
5.5.300.0130.07320.89
5.5.290.0030.05020.93
5.5.280.0030.07720.94
5.5.270.0170.05720.78
5.5.260.0200.07020.91
5.5.250.0170.07020.62
5.5.240.0030.07320.16
5.5.230.0030.07020.15
5.5.220.0000.04720.19
5.5.210.0070.08020.25
5.5.200.0170.06320.11
5.5.190.0100.07020.16
5.5.180.0100.04720.11
5.5.160.0130.07720.25
5.5.150.0100.07720.25
5.5.140.0070.07720.26
5.5.130.0070.07320.20
5.5.120.0130.07020.00
5.5.110.0030.04720.25
5.5.100.0070.07320.14
5.5.90.0130.07320.08
5.5.80.0070.04720.13
5.5.70.0130.07320.10
5.5.60.0030.08720.10
5.5.50.0100.03320.01
5.5.40.0130.06720.06
5.5.30.0070.06320.14
5.5.20.0070.06720.14
5.5.10.0100.06319.96
5.5.00.0100.06720.00
5.4.450.0100.07319.11
5.4.440.0030.07719.38
5.4.430.0070.08319.41
5.4.420.0000.08019.36
5.4.410.0030.08019.25
5.4.400.0170.06018.82
5.4.390.0070.07319.10
5.4.380.0030.05019.23
5.4.370.0100.05319.03
5.4.360.0100.04019.04
5.4.350.0000.08719.07
5.4.340.0100.07318.90
5.4.320.0170.06719.14
5.4.310.0130.05018.83
5.4.300.0030.04719.11
5.4.290.0070.06719.10
5.4.280.0070.08018.94
5.4.270.0130.06319.14
5.4.260.0030.06718.94
5.4.250.0070.07718.82
5.4.240.0100.04718.80
5.4.230.0070.04318.78
5.4.220.0100.07019.18
5.4.210.0030.04319.12
5.4.200.0070.07019.22
5.4.190.0030.05319.06
5.4.180.0030.04019.03
5.4.170.0070.04718.77
5.4.160.0000.04319.02
5.4.150.0100.03318.88
5.4.140.0100.03716.24
5.4.130.0070.04316.27
5.4.120.0030.07716.31
5.4.110.0100.07016.40
5.4.100.0100.07016.36
5.4.90.0030.04316.36
5.4.80.0100.04316.34
5.4.70.0100.04316.36
5.4.60.0130.05716.35
5.4.50.0030.07716.21
5.4.40.0130.04316.48
5.4.30.0100.05316.33
5.4.20.0030.04316.38
5.4.10.0030.07716.30
5.4.00.0070.08015.52
5.3.290.0070.04714.55
5.3.280.0070.07014.58
5.3.270.0100.07014.63
5.3.260.0100.04314.64
5.3.250.0100.06314.62
5.3.240.0100.06714.63
5.3.230.0130.04314.44
5.3.220.0070.05714.43
5.3.210.0000.04314.43
5.3.200.0030.07014.57
5.3.190.0100.06714.59
5.3.180.0030.04314.52
5.3.170.0070.07014.55
5.3.160.0070.06314.54
5.3.150.0070.07014.57
5.3.140.0100.06314.44
5.3.130.0070.07714.55
5.3.120.0030.04314.53
5.3.110.0070.07714.52
5.3.100.0100.04014.04
5.3.90.0100.06714.04
5.3.80.0000.07313.99
5.3.70.0130.06314.02
5.3.60.0100.04313.78
5.3.50.0070.04013.90
5.3.40.0030.08313.97
5.3.30.0200.06013.89
5.3.20.0100.06313.70
5.3.10.0000.06313.43
5.3.00.0100.04013.52
5.2.170.0100.05711.00
5.2.160.0030.05011.16
5.2.150.0030.03711.21
5.2.140.0070.04711.21
5.2.130.0100.05310.97
5.2.120.0000.06710.97
5.2.110.0000.03710.98
5.2.100.0000.04011.09
5.2.90.0100.05011.12
5.2.80.0070.04311.11
5.2.70.0030.04010.95
5.2.60.0030.06310.94
5.2.50.0030.06311.03
5.2.40.0070.03310.94
5.2.30.0130.04310.92
5.2.20.0030.06310.94
5.2.10.0070.06010.87
5.2.00.0070.05310.66
5.1.60.0070.04710.02
5.1.50.0030.0539.85
5.1.40.0000.04310.00
5.1.30.0000.04310.28
5.1.20.0030.05310.30
5.1.10.0000.06010.12
5.1.00.0030.05710.08
5.0.50.0070.0438.41
5.0.40.0030.0408.45
5.0.30.0000.0678.23
5.0.20.0000.0278.23
5.0.10.0030.0338.18
5.0.00.0070.0338.25
4.4.90.0000.0177.05
4.4.80.0000.0207.05
4.4.70.0000.0207.05
4.4.60.0030.0377.05
4.4.50.0000.0277.05
4.4.40.0030.0537.05
4.4.30.0030.0337.05
4.4.20.0070.0137.05
4.4.10.0000.0207.05
4.4.00.0000.0307.05
4.3.110.0030.0307.05
4.3.100.0000.0237.05
4.3.90.0000.0377.05
4.3.80.0030.0507.05
4.3.70.0070.0307.05
4.3.60.0070.0207.05
4.3.50.0030.0337.05
4.3.40.0030.0407.05
4.3.30.0000.0337.05
4.3.20.0000.0207.05
4.3.10.0000.0177.05
4.3.00.0070.0237.05

preferences:
43.15 ms | 401 KiB | 5 Q